Differential Diagnosis | DDx vs Period Tracker and Calendar
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$30–$200
$1.5M–$6.2M
Downloads / mo
3–20
510k–2.1M
Rating
—
★ 4.87 (551k)
Pricing
Paid $1999
Free + IAP
Category
Medical
Medical
Released
1.4y ago
10.8y ago
Verdict: Period Tracker and Calendar earns more — an estimated $1.5M–$6.2M/mo, versus $30–$200/mo for Differential Diagnosis | DDx.